/* Neon Ember / Exchange Dark — Gate芝麻开门 gate2 */
/* Color palette: Charcoal #0d1117, Ember Orange #f97316, Electric Teal #14b8a6, Gold #fbbf24, Surface #161b22, Card #1c2128 */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1c2128;
  --bg4: #21262d;
  --ember: #f97316;
  --ember-d: #ea6c0a;
  --ember-l: #fb923c;
  --teal: #14b8a6;
  --teal-d: #0d9488;
  --gold: #fbbf24;
  --gold-d: #f59e0b;
  --violet: #8b5cf6;
  --rose: #f43f5e;
  --sky: #38bdf8;
  --green: #22c55e;
  --text: #e6edf3;
  --text2: #8b949e;
  --text3: #6e7681;
  --border: #30363d;
  --border2: #21262d;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
}

html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.6; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
ul { list-style: none; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600;
  cursor: pointer; border: none; transition: all .2s; white-space: nowrap;
}
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-ember { background: var(--ember); color: #fff; }
.btn-ember:hover { background: var(--ember-d); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(249,115,22,.35); }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-d); transform: translateY(-1px); }
.btn-gold { background: var(--gold); color: #0d1117; }
.btn-gold:hover { background: var(--gold-d); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--ember); color: var(--ember); }
.btn-outline-w { background: transparent; border: 1.5px solid rgba(255,255,255,.3); color: #fff; }
.btn-outline-w:hover { border-color: #fff; background: rgba(255,255,255,.1); }
.btn-ghost { background: transparent; color: var(--ember); }
.btn-ghost:hover { background: rgba(249,115,22,.1); }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none !important; }

/* ── Layout ── */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sec { padding: 80px 0; }
.sec-sm { padding: 48px 0; }
.sec-dark { background: var(--bg2); }
.sec-dark2 { background: var(--bg3); }
.sec-dark3 { background: var(--bg4); }
.sec-ember { background: linear-gradient(135deg, #7c2d12 0%, #9a3412 50%, #0d1117 100%); }

/* Section head */
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  padding: 4px 12px; border-radius: 20px; margin-bottom: 14px;
}
.ey-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.ey-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.ey-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.ey-white { background: rgba(255,255,255,.1); color: rgba(255,255,255,.8); }
.ey-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; display: inline-block; }
.sec-title { font-size: clamp(28px, 4vw, 40px); font-weight: 800; line-height: 1.2; margin-bottom: 14px; }
.sec-title-light { color: #fff; }
.sec-sub { font-size: 16px; color: var(--text2); max-width: 600px; margin: 0 auto; }
.sec-sub-light { color: rgba(255,255,255,.7); }
.hl { color: var(--ember); }
.hl2 { color: var(--teal); }
.hl3 { color: var(--gold); }

/* ── Navbar ── */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,17,23,.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; height: 64px; gap: 0;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px; flex-shrink: 0; margin-right: auto;
  font-size: 18px; font-weight: 800; color: var(--text);
}
.nav-brand-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--ember), var(--gold));
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 6px 14px; border-radius: 6px; font-size: 14px; font-weight: 500;
  color: var(--text2); transition: all .2s;
}
.nav-link:hover { color: var(--text); background: var(--bg3); }
.nav-link.active {
  color: var(--bg); background: var(--ember); font-weight: 700;
}
.nav-dl { margin-left: 16px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; padding: 4px; }
.nav-mobile { display: none; background: var(--bg2); border-top: 1px solid var(--border); padding: 12px 16px; flex-direction: column; gap: 4px; }
.nav-mobile.show { display: flex; }
.nav-mobile .nav-link { padding: 10px 12px; }

/* ── Hero ── */
.hero {
  background: var(--bg);
  background-image: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(249,115,22,.18) 0%, transparent 60%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f97316' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  padding: 100px 0 80px;
  overflow: hidden; position: relative;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(249,115,22,.12); border: 1px solid rgba(249,115,22,.3);
  color: var(--ember); padding: 6px 14px; border-radius: 20px;
  font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.hero-eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--ember);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
.hero-h1 { font-size: clamp(32px, 4.5vw, 52px); font-weight: 900; line-height: 1.15; margin-bottom: 18px; }
.hero-p { font-size: 17px; color: var(--text2); margin-bottom: 32px; line-height: 1.7; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-badges { display: flex; gap: 20px; flex-wrap: wrap; }
.hero-badge {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text2);
}
.hero-badge svg { color: var(--teal); flex-shrink: 0; }

/* Hero visual — trading dashboard */
.hero-vis { position: relative; }
.hero-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 24px 80px rgba(0,0,0,.5);
}
.hc-topbar {
  background: var(--bg4); padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
}
.hc-dots { display: flex; gap: 6px; }
.hc-dot { width: 10px; height: 10px; border-radius: 50%; }
.hc-dot.r { background: #ff5f56; }
.hc-dot.y { background: #ffbd2e; }
.hc-dot.g { background: #27c93f; }
.hc-title { font-size: 13px; color: var(--text3); margin-left: 8px; }
.hc-body { padding: 20px; }
.hc-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.hc-stat { background: var(--bg2); border-radius: var(--radius-sm); padding: 14px; }
.hc-stat-lbl { font-size: 11px; color: var(--text3); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .05em; }
.hc-stat-num { font-size: 20px; font-weight: 800; }
.c-ember { color: var(--ember); }
.c-teal { color: var(--teal); }
.c-gold { color: var(--gold); }
.c-green { color: var(--green); }
.c-rose { color: var(--rose); }
.hc-chart { margin-top: 16px; }
.hc-chart-title { font-size: 12px; color: var(--text3); margin-bottom: 10px; }
.hc-bars { display: flex; flex-direction: column; gap: 8px; }
.hc-bar-row { display: flex; align-items: center; gap: 10px; }
.hc-bar-label { font-size: 12px; color: var(--text2); width: 36px; flex-shrink: 0; }
.hc-bar-track { flex: 1; height: 6px; background: var(--bg4); border-radius: 3px; overflow: hidden; }
.hc-bar-fill { height: 100%; border-radius: 3px; }
.hbf-ember { background: var(--ember); }
.hbf-teal { background: var(--teal); }
.hbf-gold { background: var(--gold); }
.hbf-violet { background: var(--violet); }
.hbf-green { background: var(--green); }
.hc-bar-val { font-size: 12px; color: var(--text2); width: 42px; text-align: right; }

/* ── Stats ticker ── */
.stats-ticker { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 24px 0; }
.stats-row { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 24px; }
.stat-item { text-align: center; }
.stat-num { font-size: 28px; font-weight: 900; line-height: 1; margin-bottom: 4px; }
.stat-lbl { font-size: 13px; color: var(--text2); }

/* ── Feature cards ── */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  position: relative; overflow: hidden; transition: border-color .2s, transform .2s;
}
.feat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  opacity: 0; transition: opacity .2s;
}
.feat-card:hover { border-color: var(--border2); transform: translateY(-2px); }
.feat-card:hover::before { opacity: 1; }
.fc-ember::before { background: var(--ember); }
.fc-teal::before { background: var(--teal); }
.fc-gold::before { background: var(--gold); }
.fc-violet::before { background: var(--violet); }
.fc-rose::before { background: var(--rose); }
.fc-sky::before { background: var(--sky); }
.feat-icon {
  width: 48px; height: 48px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.fi-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.fi-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.fi-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.fi-violet { background: rgba(139,92,246,.15); color: var(--violet); }
.fi-rose { background: rgba(244,63,94,.15); color: var(--rose); }
.fi-sky { background: rgba(56,189,248,.15); color: var(--sky); }
.feat-name { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.feat-desc { font-size: 14px; color: var(--text2); line-height: 1.65; }

/* ── Platform grid ── */
.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.plat-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; transition: border-color .2s, transform .2s;
  display: flex; flex-direction: column; align-items: center;
}
.plat-card:hover { border-color: var(--ember); transform: translateY(-2px); }
.plat-card.featured { border-color: var(--ember); position: relative; }
.plat-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--ember); color: #fff; font-size: 11px; font-weight: 700;
  padding: 3px 10px; border-radius: 20px; white-space: nowrap;
}
.plat-icon { width: 52px; height: 52px; margin: 0 auto 14px; color: var(--text); }
.plat-name { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.plat-ver { font-size: 12px; color: var(--text3); margin-bottom: 6px; }
.plat-desc { font-size: 13px; color: var(--text2); margin-bottom: 16px; line-height: 1.5; }
.plat-btn { width: 100%; }

/* ── Feature tabs ── */
.ftab-section { display: block; }
.ftab-nav { display: flex; gap: 4px; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px; margin-bottom: 32px; flex-wrap: wrap; }
.ftab-btn {
  flex: 1; min-width: 100px; padding: 9px 14px; border-radius: 6px; border: none;
  background: transparent; color: var(--text2); font-size: 14px; font-weight: 500;
  cursor: pointer; transition: all .2s; white-space: nowrap;
}
.ftab-btn.active { background: var(--ember); color: #fff; font-weight: 700; }
.ftab-panel { display: none; }
.ftab-panel.active { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.ftab-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 20px; margin-bottom: 12px;
}
.fcc-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.fcc-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.fcc-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.fcc-violet { background: rgba(139,92,246,.15); color: var(--violet); }
.ftab-h3 { font-size: 26px; font-weight: 800; margin-bottom: 12px; line-height: 1.3; }
.ftab-desc { font-size: 15px; color: var(--text2); margin-bottom: 20px; line-height: 1.7; }
.ftab-list { display: flex; flex-direction: column; gap: 8px; }
.ftld { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; color: var(--text2); }
.ftld::before { content: ''; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; margin-top: 6px; }
.ftld-ember::before { background: var(--ember); }
.ftld-teal::before { background: var(--teal); }
.ftld-gold::before { background: var(--gold); }
.ftld-violet::before { background: var(--violet); }
.ftab-visual {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px;
}
.ftab-vis-title { font-size: 13px; color: var(--text3); margin-bottom: 16px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.fv-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.fv-bar-label { font-size: 12px; color: var(--text2); width: 50px; flex-shrink: 0; }
.fv-bar-track { flex: 1; height: 8px; background: var(--bg4); border-radius: 4px; overflow: hidden; }
.fv-bar-fill { height: 100%; border-radius: 4px; }
.fvf-ember { background: linear-gradient(90deg, var(--ember-d), var(--ember-l)); }
.fvf-teal { background: linear-gradient(90deg, var(--teal-d), var(--teal)); }
.fvf-gold { background: linear-gradient(90deg, var(--gold-d), var(--gold)); }
.fvf-violet { background: linear-gradient(90deg, #7c3aed, var(--violet)); }
.fvf-green { background: linear-gradient(90deg, #16a34a, var(--green)); }
.fv-bar-val { font-size: 12px; color: var(--text2); width: 36px; text-align: right; }
.fv-stats { display: flex; gap: 20px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.fv-stat { flex: 1; min-width: 60px; }
.fv-stat-num { font-size: 20px; font-weight: 800; margin-bottom: 2px; }
.fv-stat-lbl { font-size: 11px; color: var(--text3); }

/* ── Deep rows ── */
.deep-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; padding: 72px 0; border-bottom: 1px solid var(--border); }
.deep-row:last-child { border-bottom: none; }
.deep-row.flip .deep-vis { order: -1; }
.deep-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 20px; margin-bottom: 14px;
}
.dc-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.dc-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.dc-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.deep-h3 { font-size: clamp(22px, 3vw, 32px); font-weight: 800; line-height: 1.25; margin-bottom: 14px; }
.deep-desc { font-size: 15px; color: var(--text2); margin-bottom: 20px; line-height: 1.7; }
.deep-list { display: flex; flex-direction: column; gap: 10px; }
.dl-item { display: flex; align-items: flex-start; gap: 10px; }
.dl-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; margin-top: 6px; }
.dl-dot.ember { background: var(--ember); }
.dl-dot.teal { background: var(--teal); }
.dl-dot.gold { background: var(--gold); }
.dl-text { font-size: 14px; color: var(--text2); line-height: 1.6; }
.deep-vis {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px;
}
.dv-title { font-size: 13px; color: var(--text3); margin-bottom: 16px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.dv-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.dv-bar-label { font-size: 12px; color: var(--text2); width: 56px; flex-shrink: 0; }
.dv-bar-track { flex: 1; height: 8px; background: var(--bg4); border-radius: 4px; overflow: hidden; }
.dv-bar-fill { height: 100%; border-radius: 4px; }
.dvbf-ember { background: linear-gradient(90deg, var(--ember-d), var(--ember-l)); }
.dvbf-teal { background: linear-gradient(90deg, var(--teal-d), var(--teal)); }
.dvbf-gold { background: linear-gradient(90deg, var(--gold-d), var(--gold)); }
.dv-bar-val { font-size: 12px; color: var(--text2); width: 40px; text-align: right; }
.dv-stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.dv-stat { background: var(--bg2); border-radius: var(--radius-sm); padding: 12px; text-align: center; }
.dv-stat-num { font-size: 18px; font-weight: 800; margin-bottom: 2px; }
.dv-stat-lbl { font-size: 11px; color: var(--text3); }

/* ── Review cards ── */
.rev-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rev-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; transition: border-color .2s;
}
.rev-card:hover { border-color: var(--ember); }
.rev-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.rev-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800; flex-shrink: 0;
}
.av-ember { background: rgba(249,115,22,.2); color: var(--ember); }
.av-teal { background: rgba(20,184,166,.2); color: var(--teal); }
.av-gold { background: rgba(251,191,36,.2); color: var(--gold); }
.av-violet { background: rgba(139,92,246,.2); color: var(--violet); }
.av-rose { background: rgba(244,63,94,.2); color: var(--rose); }
.av-sky { background: rgba(56,189,248,.2); color: var(--sky); }
.rev-meta { display: flex; flex-direction: column; }
.rev-name { font-size: 15px; font-weight: 700; }
.rev-role { font-size: 12px; color: var(--text3); }
.rev-stars { color: var(--gold); font-size: 14px; margin-bottom: 12px; letter-spacing: 1px; }
.rev-text { font-size: 14px; color: var(--text2); line-height: 1.65; }

/* ── Comparison table ── */
.cmp-wrap { overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.cmp-table th, .cmp-table td { padding: 14px 16px; text-align: center; border-bottom: 1px solid var(--border); }
.cmp-table th { background: var(--bg4); font-size: 13px; font-weight: 700; color: var(--text2); }
.cmp-table tr:hover td { background: rgba(249,115,22,.04); }
.cmp-table td:first-child { text-align: left; color: var(--text); font-weight: 500; }
.cmp-hl { background: rgba(249,115,22,.06) !important; }
.cmp-hl td:first-child::before { content: '★ '; color: var(--ember); }
.yes { color: var(--green); font-weight: 700; }
.no { color: var(--rose); }
.part { color: var(--gold); }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden;
}
.faq-item.open { border-color: var(--ember); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; cursor: pointer; gap: 12px;
  font-size: 15px; font-weight: 600; color: var(--text);
  transition: background .2s;
}
.faq-q:hover { background: var(--bg4); }
.faq-item.open .faq-q { color: var(--ember); }
.faq-chevron {
  flex-shrink: 0; width: 20px; height: 20px; transition: transform .3s;
  color: var(--text3);
}
.faq-item.open .faq-chevron { transform: rotate(180deg); color: var(--ember); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a { max-height: 600px; }
.faq-a-inner { padding: 0 20px 18px; font-size: 14px; color: var(--text2); line-height: 1.7; }

/* ── CTA banner ── */
.cta-banner {
  background: linear-gradient(135deg, #7c2d12 0%, #9a3412 40%, #1a1a2e 100%);
  border: 1px solid rgba(249,115,22,.3);
  border-radius: var(--radius-lg); padding: 60px 48px; text-align: center;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -50%; left: -20%; width: 60%; height: 200%;
  background: radial-gradient(ellipse, rgba(249,115,22,.15) 0%, transparent 60%);
  pointer-events: none;
}
.cta-eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ember); margin-bottom: 12px; }
.cta-h2 { font-size: clamp(24px, 3.5vw, 36px); font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-p { font-size: 16px; color: rgba(255,255,255,.7); margin-bottom: 28px; }
.cta-btns { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* ── Download page ── */
.dl-hero { padding: 72px 0 56px; text-align: center; background: var(--bg); }
.dl-hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(20,184,166,.12); border: 1px solid rgba(20,184,166,.3);
  color: var(--teal); padding: 6px 14px; border-radius: 20px;
  font-size: 13px; font-weight: 600; margin-bottom: 18px;
}
.dl-hero-tag-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
.dl-hero-h1 { font-size: clamp(28px, 4vw, 46px); font-weight: 900; line-height: 1.2; margin-bottom: 14px; }
.dl-hero-sub { font-size: 16px; color: var(--text2); max-width: 560px; margin: 0 auto; }

/* Windows main card */
.dl-win-wrap { max-width: 760px; margin: 0 auto; }
.dl-win-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 16px 60px rgba(0,0,0,.4);
}
.dl-win-top {
  background: linear-gradient(135deg, var(--ember-d), var(--ember-l));
  padding: 6px 0; text-align: center; font-size: 12px; font-weight: 700;
  color: #fff; letter-spacing: .05em;
}
.dl-win-head {
  display: flex; align-items: center; gap: 16px; padding: 28px 28px 0;
}
.dl-win-icon { width: 56px; height: 56px; border-radius: 12px; flex-shrink: 0; }
.dl-win-info { flex: 1; }
.dl-win-name { font-size: 20px; font-weight: 800; }
.dl-win-meta { font-size: 13px; color: var(--text3); margin-top: 3px; }
.dl-win-body { padding: 24px 28px 28px; }
.dl-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 20px; }
.dl-spec { background: var(--bg2); border-radius: var(--radius-sm); padding: 12px; }
.dl-spec-label { font-size: 11px; color: var(--text3); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .05em; }
.dl-spec-val { font-size: 14px; font-weight: 700; }
.dl-sec-badge {
  display: flex; align-items: center; gap: 8px;
  background: rgba(20,184,166,.08); border: 1px solid rgba(20,184,166,.2);
  border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 20px;
  font-size: 13px; color: var(--teal);
}
.dl-win-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.dl-win-btns .btn { flex: 1; min-width: 160px; }

/* Other platforms */
.op-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.op-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: border-color .2s;
}
.op-card:hover { border-color: var(--teal); }
.op-icon { width: 48px; height: 48px; margin-bottom: 14px; color: var(--text2); }
.op-name { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.op-ver { font-size: 12px; color: var(--text3); margin-bottom: 8px; }
.op-req { font-size: 13px; color: var(--text2); margin-bottom: 14px; }
.op-steps { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.op-step { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text2); }
.op-step-n {
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0;
  background: rgba(20,184,166,.15); color: var(--teal);
  font-size: 11px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin-top: 1px;
}
.op-btn { width: 100%; }

/* Guide grid */
.guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.guide-col-title { font-size: 18px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.guide-col-dot { width: 10px; height: 10px; border-radius: 50%; }
.gcd-ember { background: var(--ember); }
.gcd-teal { background: var(--teal); }
.guide-steps { display: flex; flex-direction: column; gap: 0; }
.gstep { display: flex; align-items: flex-start; gap: 14px; padding-bottom: 20px; position: relative; }
.gstep::before {
  content: ''; position: absolute; left: 15px; top: 30px; bottom: 0;
  width: 1px; background: var(--border);
}
.gstep:last-child::before { display: none; }
.gstep-num-col { flex-shrink: 0; position: relative; z-index: 1; }
.gstep-num {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
}
.gsn-ember { background: rgba(249,115,22,.2); color: var(--ember); border: 1px solid rgba(249,115,22,.4); }
.gsn-teal { background: rgba(20,184,166,.2); color: var(--teal); border: 1px solid rgba(20,184,166,.4); }
.gstep-body { padding-bottom: 4px; }
.gstep-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.gstep-desc { font-size: 13px; color: var(--text2); line-height: 1.6; }

/* Requirements grid */
.req-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.req-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; text-align: center;
}
.req-icon { width: 40px; height: 40px; margin: 0 auto 12px; color: var(--text2); }
.req-title { font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.req-val { font-size: 13px; color: var(--text2); line-height: 1.5; }

/* Version timeline */
.ver-list { display: flex; flex-direction: column; gap: 0; }
.ver-item { display: flex; align-items: flex-start; gap: 14px; padding-bottom: 24px; position: relative; }
.ver-item::before {
  content: ''; position: absolute; left: 11px; top: 24px; bottom: 0;
  width: 1px; background: var(--border);
}
.ver-item:last-child::before { display: none; }
.ver-dot-col { flex-shrink: 0; position: relative; z-index: 1; }
.ver-dot { width: 24px; height: 24px; border-radius: 50%; border: 3px solid var(--bg); }
.vd-ember { background: var(--ember); }
.vd-teal { background: var(--teal); }
.vd-gold { background: var(--gold); }
.vd-violet { background: var(--violet); }
.vd-green { background: var(--green); }
.ver-body { flex: 1; }
.ver-head { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; flex-wrap: wrap; }
.ver-num { font-size: 15px; font-weight: 700; }
.ver-tag {
  font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 4px;
}
.vt-stable { background: rgba(34,197,94,.15); color: var(--green); }
.vt-lts { background: rgba(20,184,166,.15); color: var(--teal); }
.vt-beta { background: rgba(251,191,36,.15); color: var(--gold); }
.ver-date { font-size: 12px; color: var(--text3); }
.ver-desc { font-size: 13px; color: var(--text2); line-height: 1.6; }

/* Security banner */
.sec-banner {
  display: flex; align-items: center; gap: 20px;
  background: rgba(20,184,166,.06); border: 1px solid rgba(20,184,166,.2);
  border-radius: var(--radius); padding: 24px 28px;
}
.sec-banner-icon { width: 48px; height: 48px; color: var(--teal); flex-shrink: 0; }
.sec-banner-text { flex: 1; }
.sec-banner-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.sec-banner-desc { font-size: 13px; color: var(--text2); line-height: 1.6; }

/* ── Article (zh-cn) ── */
.art-hero {
  background: var(--bg2); border-bottom: 1px solid var(--border);
  padding: 64px 0 52px;
}
.art-hero-inner { max-width: 760px; }
.art-hero-crumb { font-size: 13px; color: var(--text3); margin-bottom: 16px; }
.art-hero-crumb a { color: var(--ember); }
.art-hero-h1 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 900; line-height: 1.2; margin-bottom: 14px; }
.art-hero-sub { font-size: 15px; color: var(--text2); line-height: 1.7; max-width: 700px; }

.kw-strip { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 0; }
.kw {
  background: var(--bg4); border: 1px solid var(--border);
  color: var(--text2); font-size: 12px; padding: 4px 10px; border-radius: 4px;
}

.art-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.art-body { min-width: 0; }
.art-body h2 { font-size: 22px; font-weight: 800; margin: 32px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.art-body h3 { font-size: 17px; font-weight: 700; margin: 22px 0 10px; color: var(--ember); }
.art-body p { font-size: 15px; color: var(--text2); line-height: 1.8; margin-bottom: 14px; }
.art-body ul { padding-left: 0; display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.art-body ul li {
  font-size: 14px; color: var(--text2); padding-left: 18px; position: relative; line-height: 1.6;
}
.art-body ul li::before { content: '▸'; position: absolute; left: 0; color: var(--ember); }
.art-body ol { padding-left: 20px; display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.art-body ol li { font-size: 14px; color: var(--text2); line-height: 1.6; }

/* Inline CTA */
.inline-cta {
  border-radius: var(--radius); padding: 24px 28px; margin: 32px 0;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.ic-ember { background: rgba(249,115,22,.08); border: 1px solid rgba(249,115,22,.2); }
.ic-teal { background: rgba(20,184,166,.08); border: 1px solid rgba(20,184,166,.2); }
.ic-gold { background: rgba(251,191,36,.08); border: 1px solid rgba(251,191,36,.2); }
.inline-cta-body { flex: 1; min-width: 200px; }
.inline-cta-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.inline-cta-desc { font-size: 13px; color: var(--text2); }

/* Comparison in article */
.art-cmp-wrap { overflow-x: auto; margin: 20px 0; }
.art-cmp-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.art-cmp-table th, .art-cmp-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: center; }
.art-cmp-table th { background: var(--bg4); font-size: 12px; color: var(--text3); }
.art-cmp-table td:first-child { text-align: left; color: var(--text); }
.art-cmp-hl { background: rgba(249,115,22,.05) !important; }

/* Tips grid */
.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
.tip-card {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px;
}
.tip-num { font-size: 11px; font-weight: 700; color: var(--ember); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .06em; }
.tip-title { font-size: 14px; font-weight: 700; margin-bottom: 5px; }
.tip-desc { font-size: 13px; color: var(--text2); line-height: 1.6; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 84px; }
.sbox { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.sbox-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text3); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.sdl-btn {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg4); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 12px; margin-bottom: 8px;
  cursor: pointer; transition: border-color .2s; width: 100%; text-align: left;
}
.sdl-btn:last-child { margin-bottom: 0; }
.sdl-btn:hover { border-color: var(--ember); }
.sdl-btn.primary { background: var(--ember); border-color: var(--ember); }
.sdl-btn-icon { width: 32px; height: 32px; flex-shrink: 0; color: var(--text2); }
.sdl-btn.primary .sdl-btn-icon { color: rgba(255,255,255,.8); }
.sdl-btn-info { flex: 1; }
.sdl-btn-name { font-size: 13px; font-weight: 700; color: var(--text); line-height: 1; margin-bottom: 2px; }
.sdl-btn.primary .sdl-btn-name { color: #fff; }
.sdl-btn-ver { font-size: 11px; color: var(--text3); }
.sdl-btn.primary .sdl-btn-ver { color: rgba(255,255,255,.6); }

.stoc { display: flex; flex-direction: column; gap: 4px; }
.stoc-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text2); padding: 6px 8px; border-radius: 6px;
  transition: background .15s, color .15s; cursor: pointer;
}
.stoc-item:hover { background: var(--bg4); color: var(--ember); }
.stoc-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--ember); flex-shrink: 0; }

.sstat-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border2); }
.sstat-item:last-child { border-bottom: none; }
.sstat-lbl { font-size: 13px; color: var(--text2); }
.sstat-num { font-size: 14px; font-weight: 800; color: var(--ember); }

.side-security {
  display: flex; align-items: flex-start; gap: 8px;
  background: rgba(20,184,166,.06); border: 1px solid rgba(20,184,166,.2);
  border-radius: var(--radius-sm); padding: 12px;
}
.side-security-text { font-size: 12px; color: var(--text3); line-height: 1.5; }

/* ── Footer ── */
.site-footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 36px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; }
.footer-brand-icon {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--ember), var(--gold));
  display: flex; align-items: center; justify-content: center;
}
.footer-brand-name { color: var(--text); }
.footer-security { font-size: 13px; color: var(--teal); display: flex; align-items: center; gap: 6px; }
.footer-note { font-size: 11px; color: var(--text3); text-align: right; line-height: 1.6; max-width: 500px; }

/* ── spin keyframe ── */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ── Responsive ── */
/* ── News Cards ── */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 12px; transition: border-color .2s, transform .2s; }
.news-card:hover { border-color: var(--ember); transform: translateY(-3px); }
.news-card-tag { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; width: fit-content; }
.news-tag-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.news-tag-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.news-tag-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.news-card-date { font-size: 13px; color: var(--text3); }
.news-card-title { font-size: 17px; font-weight: 700; line-height: 1.45; }
.news-card-title a { color: var(--text); transition: color .2s; }
.news-card-title a:hover { color: var(--ember); }
.news-card-excerpt { font-size: 14px; color: var(--text2); line-height: 1.7; flex: 1; }
.news-read-more { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; font-weight: 600; color: var(--ember); margin-top: auto; transition: gap .2s; }
.news-read-more:hover { gap: 8px; }
.news-more-wrap { text-align: center; margin-top: 40px; }

/* ── News Article Pages ── */
.news-hero { background: var(--bg2); border-bottom: 1px solid var(--border); padding: 64px 0 48px; }
.news-hero-inner { max-width: 800px; }
.news-hero-crumb { font-size: 13px; color: var(--text3); margin-bottom: 16px; }
.news-hero-crumb a { color: var(--text3); }
.news-hero-crumb a:hover { color: var(--ember); }
.news-hero-tag { display: inline-flex; align-items: center; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 600; margin-bottom: 16px; }
.news-hero-tag.nt-ember { background: rgba(249,115,22,.15); color: var(--ember); }
.news-hero-tag.nt-teal { background: rgba(20,184,166,.15); color: var(--teal); }
.news-hero-tag.nt-gold { background: rgba(251,191,36,.15); color: var(--gold); }
.news-hero-h1 { font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.news-hero-meta { font-size: 14px; color: var(--text3); display: flex; gap: 16px; align-items: center; }
.news-body { max-width: 800px; margin: 0 auto; padding: 48px 0 64px; }
.news-body p { font-size: 16px; color: var(--text2); line-height: 1.85; margin-bottom: 20px; }
.news-body h2 { font-size: 22px; font-weight: 700; color: var(--text); margin: 36px 0 14px; }
.news-body h3 { font-size: 18px; font-weight: 700; color: var(--text); margin: 28px 0 10px; }
.news-body ul { padding-left: 20px; margin-bottom: 20px; }
.news-body ul li { font-size: 16px; color: var(--text2); line-height: 1.85; margin-bottom: 10px; list-style: disc; }
.news-body strong { color: var(--text); }
.news-back { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text3); margin-bottom: 32px; transition: color .2s; }
.news-back:hover { color: var(--ember); }

/* ── News List Page ── */
.news-list-grid { display: flex; flex-direction: column; gap: 24px; max-width: 860px; margin: 0 auto; }
.news-list-item { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 32px; display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start; transition: border-color .2s, transform .2s; }
.news-list-item:hover { border-color: var(--ember); transform: translateX(4px); }
.news-list-date { text-align: center; min-width: 60px; }
.news-list-day { font-size: 28px; font-weight: 800; color: var(--ember); line-height: 1; }
.news-list-month { font-size: 12px; color: var(--text3); margin-top: 4px; }
.news-list-content { display: flex; flex-direction: column; gap: 8px; }
.news-list-title { font-size: 18px; font-weight: 700; color: var(--text); line-height: 1.4; transition: color .2s; }
.news-list-title:hover { color: var(--ember); }
.news-list-excerpt { font-size: 14px; color: var(--text2); line-height: 1.7; }
.news-list-read { font-size: 14px; font-weight: 600; color: var(--ember); display: inline-flex; align-items: center; gap: 5px; transition: gap .2s; }
.news-list-read:hover { gap: 8px; }

@media (max-width: 1024px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .req-grid { grid-template-columns: repeat(2, 1fr); }
  .ftab-panel.active { grid-template-columns: 1fr; }
  .art-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 768px) {
  .news-grid { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-vis { display: none; }
  .deep-row { grid-template-columns: 1fr; gap: 32px; }
  .deep-row.flip .deep-vis { order: 0; }
  .guide-grid { grid-template-columns: 1fr; }
  .rev-grid { grid-template-columns: 1fr; }
  .op-grid { grid-template-columns: 1fr; }
  .dl-specs { grid-template-columns: repeat(2, 1fr); }
  .dv-stat-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-banner { padding: 40px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-note { text-align: left; }
  .nav-links, .nav-dl { display: none; }
  .nav-toggle { display: block; }
  .stats-row { gap: 16px; }
  .feat-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .sec { padding: 56px 0; }
  .plat-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .dl-specs { grid-template-columns: 1fr; }
  .ftab-nav { flex-direction: column; }
  .ftab-btn { flex: none; }
}